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Running Systems

(and me chasing them)

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Running Systems
(and me chasing them)

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Disk Storage | Linux

Linux LVM performace measurement

Byetzion 10/06/2007

Modern Linux LVM offers great abilities to maintain snapshots of existing logical volumes. Unlike NetApp “Write Anywhere File Layout” (WAFL), Linux LVM uses “Copy-on-Write” (COW) to allow snapshots. The process, in general, can be described in this pdf document. I have issues several small tests, just to get real-life estimations of what is the actual…

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Disk Storage | Linux | Scripting/Programming

LVM Snapshots with MySQL

Byetzion 02/12/2006

Nowadays, when LVM2 is common and is actually the default in installation of RedHat based distributions, using its snapshot capabilities can save lots of grief when files are deleted or when you need to revert to a day in the past – both for your files and for your MySQL DB. I have created a…

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Disk Storage

Ontap Simulator, and some insights about NetApp

Byetzion 09/05/2006

First and foremost – the Ontap simulator, a great tool which surely can assist in learning NetApp interface and utilization, lacks in performance. It has some built-in limitations – No FCP, no disks (virtual disks) larger than 1GB (per my trial-and-error. I might find out I was wrong somehow, and put in on this website),…

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